Indeed, the last time we saw anything even approaching a 49-month double digit rate string was the 36-month string that gave us the housing boom turn bust turn Great Recession.
Nowhere in the manual does it explain the weight (thickness) of nylon string to use when reloading the trimmer, nor does it explain how to install the string into the double-threaded spool so that it feeds correctly.
As readers of the Monetary Watch are aware, the run-up to the housing bubble turn credit implosion turn Great Recession saw a string of 36 months of double digit growth for a cumulative increase of 48%.